Machine for pointing wire



Patented Dec. 13

n. PETERS Pholo-Ldhograpbor, Wahinglon, n c.

UNITED STATES PATENT GEEicE.

\VILLIAM EDENBORN, OF ST. LOUIS, MISSOURI.

MACHINE FOR POINTING WIRE.

SPECIFICATION forming part of Letters Patent No. 250,795, dated. December 13, 1881. Application filed June], 1881. (No model.)

To all whom it may concern Be it known that I, WILLIAM EDENBORN, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Machines for Pointing Wire, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to a machine for pointing wire prior to and in preparation for the subsequent pulling of the same, the object being to form a tapering end to the wire, so that the drawing-machine can operate upon it.

My improvement consists, first, in the combination of a supporting-table having a shaft mounted thereon and adapted to be rotated at a high rate of speed by suitable driving mechanism, a head (or heads) having an opening for the insertion of the wire, bevel-edged knives with serrated edges, and grooves in the head for receiving and set-screws for retaining said knives, as hereinafter set forth.

My improvement consists, secondly, in a pcculiar means for gaging the knives, consisting of a plug and pin, as hereinafter described.

-In the drawings, Figure 1 is a perspective view of my invention, showing two heads secured to the driving-shaft, whose supportingtable is shown. Fig. 2 is a front view of the head. Fig. 3 is a vertical section of same through 00 00, Fig. 5. Fig. 4: is a rear view of the head. Fig. 5 is a side view of the head, showing part of the driving-shaft in section. Fig. 6 is a horizontal section of the head and a portion of the shaft. Fig. 7 is a horizontal section through the head, the knives being withdrawn, showing my means for setting or gaging the knives. Figs. 8 and9 are side views of gaging-pins. Fig. 10 shows a coil of wire whose end has been pointed by my machine. Figs. 2, 3, 4, 5, 6, 7,8, and 9 are on an enlarged scale from Figs. 1 and 10.

A is the supporting-table, which is of any common construction.

B is the driving-shaft, turning in suitable boxes, I) b, which is preferably tubular or provided with tubular ends, screw-threaded, as shown in Figs.5 and 6,for receiving the screwthreaded portion of the head 1). I prefer to use two heads on the one shaft, as one supporting-table and one motive power will then do for both; but one head alone may be used. As a matter of course, when two heads are used on the same shaft the cutting-edges of the knives of the two heads are reversed, as the heads revolve in the samedirection.

O is the driving-pulley on the shaft B, and G is a loose pulley for receiving the drivingbelt whenthe machine is at rest.

The head D has a hollow screw-threaded reduced portion, d, which screws into the hollow or hollow-ended shaft B. The main part of the head has an axial bore, 01, (see Fig. 7, where the knives are removed,) not quite as long as the length of the head. The portion d of the head has an axial bore, (1 and the face of the head has a central opening, (1 for the insertion of the wire to submit it to the action of the knives E. The knives E have beveled cutting-edges 6. (See Figs. 3, 6, and 7.) The deepest parts of the cutting-edges of the knives are at the rear of the head, so that as the wire is fed in it is pointed, as shown in Fig. 10.

The knives are five in number, and are secured to the-head in openings, d*, by set-screws D, screwing preferably through the rear of the head, pressing against their back edges.

The face edges 0 of the knives are serrated ornotched, to take a better hold of the head as the set-screws D jam upon their back edges. The openings 61 are .made sufficiently large to allow the easy escape of the wire shavings.

My means for setting the knives to the right adjustment in the head, when theyhave been removed for sharpening or when they are to be gaged for pointing wire of another size, is illustrated by Figs.7,8,and 9,and is as follows: The head being removed from its driving-shaft, the plug F is inserted into the hole 01 which limits the inward movement of the gaging-pin G. The pin G is then inserted through the hole (1 in the face of the head, and the knives then being put in their places in the head, their inward movement is limited by thegaging-pin, which is of the same size and shape as the end of the wire after it has been pointed. There are grooves c in the head, to receive the back edges of the knives.

Having thus described my invention, the folscrews D, all substantially as and for the purlowing is What I claim as new therein and depose set forth. 1o sire to secure by Letters Patent: 2. The described means for gagin gtheknives,

1. The combination of supporting-table A, consisting of plug F and pin G, as set forth.

5 shaft B, provided with suitable driving mech- WM. EDENBORN.

anism, head D, having openings (1 for the pur- Witnesses: pose set forth, beveledged knives E, with ser- SAML. KNIGHT, rated edges 0, grooves 6 and retaining set- GEO. H. KNIGHT. 

